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Finding the Fourth Proportional to 70,643.63, 105,981.04 and 23,256.80

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Solution

The fourth proportional to 70,643.63, 105,981.04 and 23,256.80 is: 34,890.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,643.63 : 105,981.04 = 23,256.80 : x
  2. Step 2: Convert to fraction form
    70,643.63/105,981.04 = 23,256.80/x
  3. Step 3: Cross multiply
    70,643.63x = 105,981.04 × 23,256.80
  4. Step 4: Simplify right side
    70,643.63x = 2,464,780,343.81
  5. Step 5: Solve for x
    x = 2,464,780,343.81/70,643.63
  6. Step 6: Final answer
    x = 34,890.34

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.